文章摘要
陈群,郝俊红,陈磊,等.电-热综合能源系统中能量的整体输运模型[J].电力系统自动化. DOI: 10.7500/AEPS20161209002.
CHEN Qun,HAO Junhong,CHEN Lei, et al.Energy Transport Model for Analysis of the Integrated Electric-Thermal Energy System[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20161209002.
电-热综合能源系统中能量的整体输运模型
Energy Transport Model for Analysis of the Integrated Electric-Thermal Energy System
DOI:10.7500/AEPS20161209002
关键词: 电-热综合能源系统  能量流  整体输运模型  火积理论
KeyWords: Integrated electric-thermal energy system  energy flow  integral transport model  entransy theory
上网日期:2017-05-18
基金项目:国家优秀青年基金,国家科技支撑计划,国家电力公司科技项目
作者单位E-mail
陈群 清华大学工程力学系 chenqun@tsinghua.edu.cn 
郝俊红 清华大学工程力学系 haojh14@mails.tsinghua.edu.cn 
陈磊 清华大学电机系 chenlei08@tsinghua.edu.cn 
戴远航 清华大学电机系 daiyuanhang09@163.com 
徐飞 清华大学电机系 xufei@tsinghua.edu.cn 
闵勇 清华大学电机系 minyong@tsinghua.edu.cn 
摘要:
      促进可再生能源消纳、提高能源综合利用效率是电力和热力等能源系统可持续发展的重要途径。本文针对电力和热力两种异质能源系统在传统研究对象和分析方法上的差异性,引入火积 理论,结合热电比拟方法,从热量输运的驱动力和阻抗的角度揭示了热系统中基本元件的本构关系,并从能量流的视角对其重新建模,结合热系统的拓扑结构,提出热系统的能量流模型来描述系统中热量的整体输运规律。在此基础上,同时考虑电-热综合能源系统中的能量平衡特性和热量输运的不可逆性,提出了电-热综合能源系统的整体能量流模型,统一了电能传输和热能输运的研究视角,揭示了系统中能量的整体输运规律。最后,针对一个简单的电-热综合能源系统,以最小化系统总煤耗为目标,应用能量流和互为边界的方法分别预测了风电出力情况,结果表明能量流法预测的风电出力更准确,从而验证了能量流法的可行性和必要性。#$NL关键词: 电-热综合能源系统;能量流;整体输运模型;火积理论
Abstract:
      Improvement of renewable energy accommodation and energy utilization efficiency are both promising to achieve the sustainable development of both electric and thermal energy systems, where the study subjects and the analysis methods are different. Based on the entransy theory and the analogy between electricity and heat in transmission, this paper first proposed the constitutive relations of heat exchangers in thermal system by considering the driving force and thermal resistance in heat transfer, and then constructed an alternative model for each heat exchanger from the energy flow perspective. Together with the topology structure, we developed the energy flow model of thermal system to describe the integral heat transport discipline. On this basis, we introduced the energy flow model of the integrated electric-thermal energy system with consideration of energy conservation and heat transfer irreversibility simultaneously, which unified the study perspective of electric and thermal energy in transmission and revealed the integral energy transport discipline. Finally, we optimized a simple integrated energy system to minimize the total coal consumption by using the energy flow method and the dual-boundary method, respectively. The results shows that the predicted wind power generation by using the energy flow method is more accurate, which shows the feasibility and necessity.
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